Study on Improving Viewing Angle of Homogeneous Aligned Liquid Crystal Display using an Compensation Film

Autor: Eun Jeong Jeon, Youngjin Lim, Seong Su Kim, Mi-Hyung Chin, Yu Jin Choi, Seung-Hee Lee
Rok vydání: 2008
Předmět:
Zdroj: Journal of the Korean Institute of Electrical and Electronic Material Engineers. 21:1101-1104
ISSN: 1226-7945
Popis: We have studied electro-optic characteristics to improve viewing angle of the in-plain switching (IPS) liquid crystal display using an compensation film. The IPS mode shows relatively large light leakage and color shift in diagonal directions in a dark state. To solve this problem, we have compensated the low contrast ratio in diagonal directions using one optimized discotic film and adjusting TAC films of polarizers. The compensated IPS mode shows wide viewing angle characteristics that region of CR 50:1 is over of polar angle in all directions. The optimized IPS cell exhibits much better performances than other methods do in terms of CR and color uniformity.
Databáze: OpenAIRE